What is your Chamberlain opener trying to tell you?

When something is wrong, the UP and DOWN arrows on the opener flash a two-number code. Count the flashes of the UP arrow, then the DOWN arrow: three UP flashes and two DOWN flashes is code 3-2.

Look up a Chamberlain code

• Code 1-1The door won’t close because the safety sensors aren’t connectedCheck this first, then a pro
• Code 1-2The door won’t close because a sensor wire is shortedCheck this first, then a pro
• Code 1-3The wall button doesn’t workCheck this first, then a pro
• Code 1-4The door won’t close because the sensors can’t see each other. The manuals give code 4-6 the same meaningYou can check this
• Code 1-5The door stops short, clicks, or hums without movingCall a pro
• Code 1-6The door keeps drifting after it stopsCheck this first, then a pro
• Code 2-1 to 2-5No movement and no soundCall a pro
• Code 3-2The opener can’t learn or keep where the door should stopCall a pro
• Code 3-3The battery light keeps flashing greenCall a pro
• Code 4-1 to 4-4The door starts, then stops or reversesCheck this first, then a pro
• Code 4-5The opener runs a few inches, stops and goes backCall a pro
• Code 4-6The door won’t close because the sensors can’t see each other. The manuals give code 1-4 the same meaningYou can check this

Garage Door Science isn’t affiliated with the opener makers LiftMaster, Chamberlain or Genie. Each meaning is our summary of the maker’s own manual, which we link.